Incredible Tunnels, Betrayal, and Daring Escapes

The chapter explores the remarkable engineering feat of the Le Mettreaux tunnel built by French prisoners during WWII in Colditz castle, the tragic betrayal by a spy, and the complex escape attempts amidst the challenges of war. It also highlights the intriguing story of Indian doctor Birendranath Mazunda, his struggles in Colditz as the only non-white officer, and his daring escape to Switzerland despite facing racism and obstacles.